Acupuncture and related techniques for postoperative pain after hemorrhoidectomy: A systematic review and network meta-analysis

Acupuncture and Postoperative Pain Reduction

PURPOSE OF REVIEW

Acupuncture is an analgesic technique that has long been utilized in Eastern medicine. In recent times, various acupuncture techniques have been used in integrated pain management approaches in Western medicine. It has even been adopted as an analgesic method in surgical patients. Currently, no review exists regarding various acupuncture techniques used in perioperative pain management and data describing the utility of these techniques. This paper synthesizes the latest literature regarding the role of acupuncture in perioperative pain management. The authors sought to describe various acupuncture modalities used to help manage surgical pain and synthesize the current body of literature to help readers make informed judgements on the topic.

RECENT FINDINGS

Patients undergoing abdominal, spine/neuro, and gynecologic pelvic surgery generally benefit from acupuncture. Out of the various acupuncture techniques, electroacupuncture, transcutaneous electric acupoint stimulation, and traditional total body acupuncture seem to be most promising as adjuncts to multimodal perioperative analgesia. Benefits include improved analgesia and/or reduced narcotic requirements, decrease in PONV, and shorter time to return of bowel function. Acupuncture is a low-risk method that has the potential to enhance perioperative analgesia, decrease opioid requirement, and reduce unwanted side effects of anesthesia, surgery, and opioid administration such as nausea/vomiting. Given the variety of patient populations, various acupuncture techniques, and small patient populations for most current studies; it remains difficult to determine which acupuncture method would most benefit specific patients. Future studies with more robust sample sizes and prospective comparison on acupuncture technique would help better characterize acupuncture's role in perioperative pain management.

Strategies to Reduce Post-Hemorrhoidectomy Pain: A Systematic Review

Background and Objectives: Excisional hemorrhoidectomy is considered as a mainstay operation for high-grade hemorrhoids and complicated hemorrhoids. However, postoperative pain remains a challenging problem after hemorrhoidectomy. This systematic review aims to identify pharmacological and non-pharmacological interventions for reducing post-hemorrhoidectomy pain. Materials and Methods: The databases of Ovid MEDLINE, PubMed and EMBASE were systematically searched for randomized controlled trails (published in English language with full-text from 1981 to 30 September 2021) to include comparative studies examining post-hemorrhoidectomy pain as their primary outcomes between an intervention and another intervention (or a sham or placebo). Results: Some 157 studies were included in this review with additional information from 15 meta-analyses. Fundamentally, strategies to reduce post-hemorrhoidectomy pain were categorized into four groups: anesthetic methods, surgical techniques, intraoperative adjuncts, and postoperative interventions. In brief, local anesthesia-alone or combined with intravenous sedation was the most effective anesthetic method for excisional hemorrhoidectomy. Regarding surgical techniques, closed (Ferguson) hemorrhoidectomy performed with a vascular sealing device or an ultrasonic scalpel was recommended. Lateral internal anal sphincterotomy may be performed as a surgical adjunct to reduce post-hemorrhoidectomy pain, although it increased risks of anal incontinence. Chemical sphincterotomy (botulinum toxin, topical calcium channel blockers, and topical glyceryl trinitrate) was also efficacious in reducing postoperative pain. So were other topical agents such as anesthetic cream, 10% metronidazole ointment, and 10% sucralfate ointment. Postoperative administration of oral metronidazole, flavonoids, and laxatives was associated with a significant reduction in post-hemorrhoidectomy pain. Conclusions: This systematic review comprehensively covers evidence-based strategies to reduce pain after excisional hemorrhoidectomy. Areas for future research on this topic are also addressed at the end of this article.